"We actually meet for the first time in less than 24 hours," Jessie J. revealed. The meeting will happen at the video shoot for "Bang Bang" -- something the British singer (real name: Jessica Ellen Cornish) is also very excited about.

Of course, Big Al was more interested in hearing Jessie's opinion on who had the better butt: Ariana Grande or Nicki Minaj.

"I've never seen them in real life so I can't say, but they both definitely have great bottoms," Jessie said. How diplomatic!

Check out the full interview with Jessie J. below to find out exactly how the dream collaboration came about and what's next for her.